Update go dependencies

vendor/k8s.io/apiserver/pkg/util/feature/feature_gate.go

@@ -0,0 +1,33 @@
+/*
+Copyright 2016 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package feature
+
+import (
+	"k8s.io/component-base/featuregate"
+)
+
+var (
+	// DefaultMutableFeatureGate is a mutable version of DefaultFeatureGate.
+	// Only top-level commands/options setup and the k8s.io/component-base/featuregate/testing package should make use of this.
+	// Tests that need to modify feature gates for the duration of their test should use:
+	//   defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.<FeatureName>, <value>)()
+	DefaultMutableFeatureGate featuregate.MutableFeatureGate = featuregate.NewFeatureGate()
+
+	// DefaultFeatureGate is a shared global FeatureGate.
+	// Top-level commands/options setup that needs to modify this feature gate should use DefaultMutableFeatureGate.
+	DefaultFeatureGate featuregate.FeatureGate = DefaultMutableFeatureGate
+)